Hair brush



FIG. 1 is a front elevational view of a hair brush showing my new design, the rear being a mirror image;

FIG. 2 is a side elevational view thereof, the opposite side being a mirror image;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front elevational view thereof showing an element of the handle in an alternate position; and,

FIG. 6 is a side elevational view of the hair brush as shown in FIG. 5, the opposite side being a mirror image.

The broken lines are included to illustrate environmental structure of the hair brush that forms no part of the claimed design. 

The ornamental design for a hair brush, as shown and described. 